Shoe for lifts and the like



1,583,555 R. E. JACKMAN SHOE FOR LIFTS AND THE MK! Filed May 2 1923 [1 51011 Ema Jukman INVBNTOR;

Y WW9 Patented May I 4, 1926.

UNITED STATES PATENT, OFFICE. I

SHOE FOR LIFTS AND THE LIKE.

Application filed May as, 1923. Serial no. 640,879..

T all whom it may concern:

Be it known that I, ROYSTON ERIC JACK- j MAN, a subject of His Majesty the King of Great Britain, residing at Rose Park, South Australia, Commonwealth of Australia, have invented certain new and useful Improvements in a Shoe for Lifts and the like, of which the following is a specification My invention relates to an improved shoe and is principally designed for'use in connection with electric lifts or elevators but is applicable to various types of mechanical runner of an analogous nature.-

In connection with the shoes for the cages and counterweights of lifts it has hitherto been customary to provide means for oiling or lubricating the shoe or block either by aid of a force feed screw cap orby ordinary oiling methods. It is found, however,that in addition to the inconvenience of oiling or greasing the shoe and runner the accumulated grease collects dust and grit and the frequent lubrication of the appliance becomes ineffective.

In my invention I entirely dispense with the grease cap or oil holes and in lieu thereof I form the inner or running surface of the shoe with a series of recesses, grooves or de pressions, but preferably grooves areused in horizontal parallel alignment with each other and are filled with graphite which forms an antifriction wearing surface level with the wearing surface of the metal from which the shoe is cast.

But in order that my inventionmay more clearly understood I will now describe the same by aid of the accompanying illustrative drawings wherein Fig. 1 is a side elevation of shoe in part section.

Fig. 2 is a plan of shoe in part section.

In each of the illustrations similar letters of reference are used to denote similar or corresponding parts wherever they occur.

In the drawings a is the metal casting or body of the shoe formed with the customary extension or barrel 6 in which the screw" threaded hole 0 isprovided for. attachment and achustment of cage or weight.

The interior of the shoeis turned'or arch-ed so as to enable it-to be fitted in the usual manner .to the guide rod orpill'ar, and within the turned portion I 'c'ut or cast a series of recesses, grooves..orj'depressions which take the form of horizontal parallel grooves d which stop short of the diameter line of the turned or otherwise shaped portion as solid portion e thus leaving narrow ridges f of the solid metallic shoe material on both sides of the shoe between which are" the the shoe to the elevator I indicated by the presence of the block or graphite compound bearing areas gjwhich" may be arranged as illustrated. e

I do not confine myself to any particular size or depth of groove but I prefer to forn the base or bottom of' the grooves in the shape illustrated, but they may be rectangu-g lar, or the bottom or floor of the recesses may be reversely angled so as to form a dovetail into which the graphite may be pressed and retained, the graphite being worked into a' method or formula.' By using shoes or blocks of the nature paste according .to'any suitable well known described the wearingusurfaces both of the shoe and the pillar become well polished and do not require the application of lubricating oilor grease. I claim v v j v r A bearing shoe for elevator guideways comprising a body portioiiattachable to the elevator and having itsbearing surface provided with parallel graphite containing grooves projecting to points short of the In testimony whereof I have aifixed signature.

- :aoYsToN ERIC JACKMAN.

" ends of the bearingsurface and disposed transversely of the axis of the gu deway, 

